Can i legally bring a erfly knife trainer to school?

ok so i live in Branson, missouri, and I'm in high school i recently bought a balisong erfly knife trainer, which is legally refered to as a "training replica", it has an ungrinded metal blank, with drilled holes that cannot be sharpened now i want to know if i take it to school in my bag and i dont threaten anyone with it and just play with it on the bus and somehow a teacher or the bus driver spots it, can they legally take it? and would they report it to the police, andcan i legally be disciplined? if so would it be any more time than if say i had a cell-phone?